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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@13298 a592a061-630c-0410-9148-cb99ea01b6c8
547 lines
18 KiB
C++
547 lines
18 KiB
C++
// (C) Copyright Jeremy Siek 1999-2001.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org/libs/property_map for documentation.
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#ifndef BOOST_PROPERTY_MAP_HPP
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#define BOOST_PROPERTY_MAP_HPP
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#include <cassert>
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#include <boost/config.hpp>
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#include <boost/pending/cstddef.hpp>
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#include <boost/detail/iterator.hpp>
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#include <boost/concept_check.hpp>
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#include <boost/concept_archetype.hpp>
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namespace boost {
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//=========================================================================
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// property_traits class
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template <typename PA>
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struct property_traits {
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typedef typename PA::key_type key_type;
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typedef typename PA::value_type value_type;
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typedef typename PA::reference reference;
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typedef typename PA::category category;
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};
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//=========================================================================
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// property_traits category tags
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namespace detail {
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enum ePropertyMapID { READABLE_PA, WRITABLE_PA,
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READ_WRITE_PA, LVALUE_PA, OP_BRACKET_PA,
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RAND_ACCESS_ITER_PA, LAST_PA };
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}
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struct readable_property_map_tag { enum { id = detail::READABLE_PA }; };
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struct writable_property_map_tag { enum { id = detail::WRITABLE_PA }; };
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struct read_write_property_map_tag :
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public readable_property_map_tag,
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public writable_property_map_tag
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{ enum { id = detail::READ_WRITE_PA }; };
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struct lvalue_property_map_tag : public read_write_property_map_tag
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{ enum { id = detail::LVALUE_PA }; };
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//=========================================================================
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// property_traits specialization for pointers
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#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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// The user will just have to create their own specializations for
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// other pointers types if the compiler does not have partial
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// specializations. Sorry!
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#define BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(TYPE) \
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template <> \
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struct property_traits<TYPE*> { \
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typedef TYPE value_type; \
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typedef value_type& reference; \
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typedef std::ptrdiff_t key_type; \
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typedef lvalue_property_map_tag category; \
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}; \
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template <> \
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struct property_traits<const TYPE*> { \
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typedef TYPE value_type; \
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typedef const value_type& reference; \
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typedef std::ptrdiff_t key_type; \
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typedef lvalue_property_map_tag category; \
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}
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(long);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(unsigned long);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(int);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(unsigned int);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(short);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(unsigned short);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(char);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(unsigned char);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(signed char);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(bool);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(float);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(double);
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BOOST_SPECIALIZE_PROPERTY_TRAITS_PTR(long double);
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// This may need to be turned off for some older compilers that don't have
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// wchar_t intrinsically.
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# ifndef BOOST_NO_INTRINSIC_WCHAR_T
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template <>
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struct property_traits<wchar_t*> {
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typedef wchar_t value_type;
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typedef value_type& reference;
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typedef std::ptrdiff_t key_type;
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typedef lvalue_property_map_tag category;
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};
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template <>
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struct property_traits<const wchar_t*> {
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typedef wchar_t value_type;
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typedef const value_type& reference;
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typedef std::ptrdiff_t key_type;
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typedef lvalue_property_map_tag category;
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};
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# endif
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#else
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template <class T>
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struct property_traits<T*> {
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typedef T value_type;
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typedef value_type& reference;
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typedef std::ptrdiff_t key_type;
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typedef lvalue_property_map_tag category;
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};
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template <class T>
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struct property_traits<const T*> {
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typedef T value_type;
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typedef const value_type& reference;
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typedef std::ptrdiff_t key_type;
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typedef lvalue_property_map_tag category;
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};
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#endif
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#if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
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// MSVC doesn't have Koenig lookup, so the user has to
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// do boost::get() anyways, and the using clause
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// doesn't really work for MSVC.
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} // namespace boost
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#endif
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// These need to go in global namespace because Koenig
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// lookup does not apply to T*.
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// V must be convertible to T
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template <class T, class V>
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inline void put(T* pa, std::ptrdiff_t k, const V& val) { pa[k] = val; }
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template <class T>
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inline const T& get(const T* pa, std::ptrdiff_t k) { return pa[k]; }
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#if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
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namespace boost {
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using ::put;
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using ::get;
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#endif
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//=========================================================================
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// concept checks for property maps
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template <class PMap, class Key>
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struct ReadablePropertyMapConcept
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{
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typedef typename property_traits<PMap>::key_type key_type;
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typedef typename property_traits<PMap>::reference reference;
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typedef typename property_traits<PMap>::category Category;
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typedef boost::readable_property_map_tag ReadableTag;
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void constraints() {
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function_requires< ConvertibleConcept<Category, ReadableTag> >();
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val = get(pmap, k);
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}
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PMap pmap;
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Key k;
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typename property_traits<PMap>::value_type val;
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};
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template <typename KeyArchetype, typename ValueArchetype>
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struct readable_property_map_archetype {
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typedef KeyArchetype key_type;
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typedef ValueArchetype value_type;
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typedef convertible_to_archetype<ValueArchetype> reference;
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typedef readable_property_map_tag category;
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};
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template <typename K, typename V>
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const typename readable_property_map_archetype<K,V>::reference&
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get(const readable_property_map_archetype<K,V>&,
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const typename readable_property_map_archetype<K,V>::key_type&)
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{
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typedef typename readable_property_map_archetype<K,V>::reference R;
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return static_object<R>::get();
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}
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template <class PMap, class Key>
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struct WritablePropertyMapConcept
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{
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typedef typename property_traits<PMap>::key_type key_type;
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typedef typename property_traits<PMap>::category Category;
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typedef boost::writable_property_map_tag WritableTag;
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void constraints() {
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function_requires< ConvertibleConcept<Category, WritableTag> >();
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put(pmap, k, val);
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}
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PMap pmap;
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Key k;
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typename property_traits<PMap>::value_type val;
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};
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template <typename KeyArchetype, typename ValueArchetype>
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struct writable_property_map_archetype {
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typedef KeyArchetype key_type;
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typedef ValueArchetype value_type;
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typedef void reference;
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typedef writable_property_map_tag category;
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};
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template <typename K, typename V>
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void put(const writable_property_map_archetype<K,V>&,
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const typename writable_property_map_archetype<K,V>::key_type&,
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const typename writable_property_map_archetype<K,V>::value_type&) { }
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template <class PMap, class Key>
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struct ReadWritePropertyMapConcept
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{
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typedef typename property_traits<PMap>::category Category;
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typedef boost::read_write_property_map_tag ReadWriteTag;
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void constraints() {
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function_requires< ReadablePropertyMapConcept<PMap, Key> >();
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function_requires< WritablePropertyMapConcept<PMap, Key> >();
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function_requires< ConvertibleConcept<Category, ReadWriteTag> >();
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}
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};
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template <typename KeyArchetype, typename ValueArchetype>
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struct read_write_property_map_archetype
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: public readable_property_map_archetype<KeyArchetype, ValueArchetype>,
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public writable_property_map_archetype<KeyArchetype, ValueArchetype>
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{
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typedef KeyArchetype key_type;
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typedef ValueArchetype value_type;
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typedef convertible_to_archetype<ValueArchetype> reference;
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typedef read_write_property_map_tag category;
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};
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template <class PMap, class Key>
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struct LvaluePropertyMapConcept
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{
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typedef typename property_traits<PMap>::category Category;
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typedef boost::lvalue_property_map_tag LvalueTag;
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typedef typename property_traits<PMap>::reference reference;
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void constraints() {
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function_requires< ReadablePropertyMapConcept<PMap, Key> >();
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function_requires< ConvertibleConcept<Category, LvalueTag> >();
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typedef typename property_traits<PMap>::value_type value_type;
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typedef typename require_same<
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const value_type&, reference>::type req;
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reference ref = pmap[k];
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ignore_unused_variable_warning(ref);
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}
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PMap pmap;
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Key k;
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};
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template <typename KeyArchetype, typename ValueArchetype>
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struct lvalue_property_map_archetype
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: public readable_property_map_archetype<KeyArchetype, ValueArchetype>
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{
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typedef KeyArchetype key_type;
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typedef ValueArchetype value_type;
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typedef const ValueArchetype& reference;
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typedef lvalue_property_map_tag category;
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const value_type& operator[](const key_type&) const {
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return static_object<value_type>::get();
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}
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};
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template <class PMap, class Key>
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struct Mutable_LvaluePropertyMapConcept
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{
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typedef typename property_traits<PMap>::category Category;
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typedef boost::lvalue_property_map_tag LvalueTag;
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typedef typename property_traits<PMap>::reference reference;
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void constraints() {
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boost::function_requires< ReadWritePropertyMapConcept<PMap, Key> >();
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boost::function_requires<ConvertibleConcept<Category, LvalueTag> >();
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typedef typename property_traits<PMap>::value_type value_type;
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typedef typename require_same<
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value_type&,
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reference>::type req;
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reference ref = pmap[k];
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ignore_unused_variable_warning(ref);
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}
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PMap pmap;
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Key k;
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};
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template <typename KeyArchetype, typename ValueArchetype>
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struct mutable_lvalue_property_map_archetype
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: public readable_property_map_archetype<KeyArchetype, ValueArchetype>,
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public writable_property_map_archetype<KeyArchetype, ValueArchetype>
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{
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typedef KeyArchetype key_type;
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typedef ValueArchetype value_type;
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typedef ValueArchetype& reference;
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typedef lvalue_property_map_tag category;
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value_type& operator[](const key_type&) const {
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return static_object<value_type>::get();
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}
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};
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struct identity_property_map;
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// A helper class for constructing a property map
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// from a class that implements operator[]
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template <class Reference, class LvaluePropertyMap>
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struct put_get_helper { };
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template <class PropertyMap, class Reference, class K>
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inline Reference
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get(const put_get_helper<Reference, PropertyMap>& pa, const K& k)
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{
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Reference v = static_cast<const PropertyMap&>(pa)[k];
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return v;
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}
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template <class PropertyMap, class Reference, class K, class V>
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inline void
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put(const put_get_helper<Reference, PropertyMap>& pa, K k, const V& v)
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{
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static_cast<const PropertyMap&>(pa)[k] = v;
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}
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//=========================================================================
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// Adapter to turn a RandomAccessIterator into a property map
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template <class RandomAccessIterator,
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class IndexMap
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#ifdef BOOST_NO_STD_ITERATOR_TRAITS
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, class T, class R
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#else
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, class T = typename std::iterator_traits<RandomAccessIterator>::value_type
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, class R = typename std::iterator_traits<RandomAccessIterator>::reference
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#endif
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>
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class iterator_property_map
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: public boost::put_get_helper< R,
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iterator_property_map<RandomAccessIterator, IndexMap,
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T, R> >
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{
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public:
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typedef typename property_traits<IndexMap>::key_type key_type;
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typedef T value_type;
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typedef R reference;
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typedef boost::lvalue_property_map_tag category;
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inline iterator_property_map(
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RandomAccessIterator cc = RandomAccessIterator(),
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const IndexMap& _id = IndexMap() )
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: iter(cc), index(_id) { }
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inline R operator[](key_type v) const { return *(iter + get(index, v)) ; }
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protected:
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RandomAccessIterator iter;
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IndexMap index;
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};
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#if !defined BOOST_NO_STD_ITERATOR_TRAITS
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template <class RAIter, class ID>
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inline iterator_property_map<
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RAIter, ID,
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typename std::iterator_traits<RAIter>::value_type,
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typename std::iterator_traits<RAIter>::reference>
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make_iterator_property_map(RAIter iter, ID id) {
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function_requires< RandomAccessIteratorConcept<RAIter> >();
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typedef iterator_property_map<
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RAIter, ID,
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typename std::iterator_traits<RAIter>::value_type,
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typename std::iterator_traits<RAIter>::reference> PA;
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return PA(iter, id);
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}
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#endif
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template <class RAIter, class Value, class ID>
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inline iterator_property_map<RAIter, ID, Value, Value&>
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make_iterator_property_map(RAIter iter, ID id, Value) {
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function_requires< RandomAccessIteratorConcept<RAIter> >();
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typedef iterator_property_map<RAIter, ID, Value, Value&> PMap;
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return PMap(iter, id);
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}
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template <class RandomAccessIterator,
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class IndexMap
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#ifdef BOOST_NO_STD_ITERATOR_TRAITS
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, class T, class R
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#else
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, class T = typename std::iterator_traits<RandomAccessIterator>::value_type
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, class R = typename std::iterator_traits<RandomAccessIterator>::reference
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#endif
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>
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class safe_iterator_property_map
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: public boost::put_get_helper< R,
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safe_iterator_property_map<RandomAccessIterator, IndexMap,
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T, R> >
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{
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public:
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typedef typename property_traits<IndexMap>::key_type key_type;
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typedef T value_type;
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typedef R reference;
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typedef boost::lvalue_property_map_tag category;
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inline safe_iterator_property_map(
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RandomAccessIterator first,
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std::size_t n_ = 0,
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const IndexMap& _id = IndexMap() )
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: iter(first), n(n_), index(_id) { }
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inline safe_iterator_property_map() { }
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inline R operator[](key_type v) const {
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assert(get(index, v) < n);
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return *(iter + get(index, v)) ;
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}
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typename property_traits<IndexMap>::value_type size() const { return n; }
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protected:
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RandomAccessIterator iter;
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typename property_traits<IndexMap>::value_type n;
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IndexMap index;
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};
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#if !defined BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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template <class RAIter, class ID>
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inline safe_iterator_property_map<
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RAIter, ID,
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typename boost::detail::iterator_traits<RAIter>::value_type,
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typename boost::detail::iterator_traits<RAIter>::reference>
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make_safe_iterator_property_map(RAIter iter, std::size_t n, ID id) {
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function_requires< RandomAccessIteratorConcept<RAIter> >();
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typedef safe_iterator_property_map<
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RAIter, ID,
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typename boost::detail::iterator_traits<RAIter>::value_type,
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typename boost::detail::iterator_traits<RAIter>::reference> PA;
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return PA(iter, n, id);
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}
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#endif
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template <class RAIter, class Value, class ID>
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inline safe_iterator_property_map<RAIter, ID, Value, Value&>
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make_safe_iterator_property_map(RAIter iter, std::size_t n, ID id, Value) {
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function_requires< RandomAccessIteratorConcept<RAIter> >();
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typedef safe_iterator_property_map<RAIter, ID, Value, Value&> PMap;
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return PMap(iter, n, id);
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}
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//=========================================================================
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// An adaptor to turn a Unique Pair Associative Container like std::map or
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// std::hash_map into an Lvalue Property Map.
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template <typename UniquePairAssociativeContainer>
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class associative_property_map
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: public boost::put_get_helper<
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typename UniquePairAssociativeContainer::value_type::second_type&,
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associative_property_map<UniquePairAssociativeContainer> >
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{
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typedef UniquePairAssociativeContainer C;
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public:
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typedef typename C::key_type key_type;
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typedef typename C::value_type::second_type value_type;
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typedef value_type& reference;
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typedef lvalue_property_map_tag category;
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associative_property_map() : m_c(0) { }
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associative_property_map(C& c) : m_c(&c) { }
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reference operator[](const key_type& k) const {
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return (*m_c)[k];
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}
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private:
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C* m_c;
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};
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template <class UniquePairAssociativeContainer>
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associative_property_map<UniquePairAssociativeContainer>
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make_assoc_property_map(UniquePairAssociativeContainer& c)
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{
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return associative_property_map<UniquePairAssociativeContainer>(c);
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}
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template <typename UniquePairAssociativeContainer>
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class const_associative_property_map
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: public boost::put_get_helper<
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const typename UniquePairAssociativeContainer::value_type::second_type&,
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const_associative_property_map<UniquePairAssociativeContainer> >
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{
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typedef UniquePairAssociativeContainer C;
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public:
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typedef typename C::key_type key_type;
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typedef typename C::value_type::second_type value_type;
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typedef const value_type& reference;
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typedef lvalue_property_map_tag category;
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const_associative_property_map() : m_c(0) { }
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const_associative_property_map(const C& c) : m_c(&c) { }
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reference operator[](const key_type& k) const {
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return m_c->find(k)->second;
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}
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private:
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C const* m_c;
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};
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template <class UniquePairAssociativeContainer>
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const_associative_property_map<UniquePairAssociativeContainer>
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make_assoc_property_map(const UniquePairAssociativeContainer& c)
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{
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return const_associative_property_map<UniquePairAssociativeContainer>(c);
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}
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//=========================================================================
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// A property map that applies the identity function to integers
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struct identity_property_map
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: public boost::put_get_helper<std::size_t,
|
|
identity_property_map>
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|
{
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|
typedef std::size_t key_type;
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|
typedef std::size_t value_type;
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|
typedef std::size_t reference;
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|
typedef boost::readable_property_map_tag category;
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|
|
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inline value_type operator[](const key_type& v) const { return v; }
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|
};
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|
|
|
//=========================================================================
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|
// A property map that does not do anything, for
|
|
// when you have to supply a property map, but don't need it.
|
|
namespace detail {
|
|
struct dummy_pmap_reference {
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|
template <class T>
|
|
dummy_pmap_reference& operator=(const T&) { return *this; }
|
|
operator int() { return 0; }
|
|
};
|
|
}
|
|
class dummy_property_map
|
|
: public boost::put_get_helper<detail::dummy_pmap_reference,
|
|
dummy_property_map >
|
|
{
|
|
public:
|
|
typedef void key_type;
|
|
typedef int value_type;
|
|
typedef detail::dummy_pmap_reference reference;
|
|
typedef boost::read_write_property_map_tag category;
|
|
inline dummy_property_map() : c(0) { }
|
|
inline dummy_property_map(value_type cc) : c(cc) { }
|
|
inline dummy_property_map(const dummy_property_map& x)
|
|
: c(x.c) { }
|
|
template <class Vertex>
|
|
inline reference operator[](Vertex) const { return reference(); }
|
|
protected:
|
|
value_type c;
|
|
};
|
|
|
|
|
|
} // namespace boost
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|
|
|
|
|
#endif /* BOOST_PROPERTY_MAP_HPP */
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|
|